Improved mode of heating molds



@Nimah HENRY MOOERS,v OF TOLEDO, OHIO.

Specification forming part of Letters Patent No. 33,@46, dated December3, 1861.

To all wiz/0m t may concern:

Be it known that l, HENRY Moonns, of the city of Toledo, county ofLucas, and State of Ohio, have invented a certain new and usefulmachine, apparatus, and process for heating by means of steam the ironrings, chills, or molds whereby the tread of castiron wheels andwheel-tires for railroad locomotives, cars, and carriages and othercastings are chilled or hard ened in the casting or manufacture thereof;and I dohereby declare the following to be a full, clear, and exactdescription thereof, reference being had to the accompanying drawings,making a part of this specification, in which- Figure 1 is a perspectiveview ofthe entire ring or chill forming a part of the mold designed tochill orharden the tread of the wheel, exhibiting the ends A and B ofthe tubes or openings to receive and pass off the steam for heating thesame, as hereinafter described. Fig. 2 is a perspective of asection ofsaid ring or chill, through the plane of its axis, presenting a view ofthe ends of said section and showing the section of the tubes oropeningsA and B designed to convey the steam around and through saidchill or ring, as hereinafter described.

The same letters indicate like parts in all the gures.

That cast-iron requiring to be chilled orhardened in the process ofcasting or manufacture can be chilled or hardened much more uniformlyand perfectly by heated chills or molds than by the ordinary mode ofusing cold chills or molds, and that the tread or surface of theperiphery of cast-iron wheelsor tires by heating the chills are not onlymuch more evenly and perfectly chilled and hardened, but that thecasting becomes more smooth and perfect in form, the circularity thereofnot being destroyed either by warping from sudden cooling or byroughness occasioned by the agitation of the melted metal coming incontact with the cold-iron surface of the chill, has been fullyascertained and thoroughly demonstrated by practical experiment, and theinvention of the process for that purpose has been patented.

The nature, advantage, and benclit to be derived from myinventionconsists, principally in the following particulars, viz:

First. Heatbeing more easily,economically, and conveniently conveyedthrough the medium of steam, by means of tubes or proper conductors, maybe carried and equalized to a much greater distance from its sourcewithout waste than in almost any other mode. Steam therefore becomes thegreat and important agent in accomplishing the ends and purposes of myinvention.

Second. In the application of steam to effectuate my invention it may beconveyed from one ring, chill, or mold to any desirable number of a likeor a different kind or character of chills or molds extending over anentire foundry, if required, communicatingauniform heat to all, whichcannot be accomplished by any other known mode of heating.

Third. By the use of proper furnaces asuperheated steam may be used, andany required degree of heat may be communicated to and equalized amongany desirable number of chills or molds by means of connecting tubes toany reasonable distance from the source or fountain of heat.

Fourth. By the use of steam the heating of the chills or molds can beand is done after the molds are made up and completed,which cannot bedone in any other mode of heating now in use.

To enable others to make and use my invention, I will proceed todescribe the mode of constructing and using the machine, apparatus, andprocess as have used and practiced with the same successfully.

The apparatus may be made to consist of a ring or chill cast hollow,with a tube or opening for the steam to enter at A, Fig. 1, and passaround and through the ring, with an aperture for the steam to pass outat B, Fig. l., or by a mode which Ideem preferable by making a coil ofwrought-iron pipe of the requisite size which may pass around throughthe chill or mold, as represented by A and B, Fig. 2, once, twice, o'rthrice, or even more times in a continuous coil, according to the sizeof the chill or mold to be constructed, and then cast the chill or ringaround or over the same, leaving the ends or the tube to protrude fromthe outer part of the ring or chill, as appears at A and B, Fig. 1,-sothat when the same is completed the steam forced in at A will pass roundas often as the coil of pipe before it passes out at B, Fig. l.

It will readily occur to any one that the chills or molds maybemultiplied or increased to any desirable extent, and by means ofconnectingtubes conveying heated steam from one to the other communicatethe heat in regular succession to any required number until the Wholeshall be equally and sufficiently heated before Jche process of castingbe commenced. Thus ab one smelbing any required number of railroad,carriage, or ear Wheels, wheel-tire, or other castings may be casi; ormanufactured and properly chilled or hardened at one and Jche same time.

Vhat I claim as my invention7 and desire to secure by Let/ners Patent.,is-

The heating (by means of steam) the chills or molds for hardening thetread of cast-iron wheels or Wheel-tires for railroad-cars or car-11i-ages, in the mode substantially as above described.

HENRY MOOERS.

Witnesses:

RIOHD. Morr, J. F. FRENCH.

